Vue 하위 구성 요소와 상위 구성 요소 간의 통신(코드 포함)

<template>
    <p>
        <p v-for="(item,key) of c" :key="key">
           {{key}}: {{item}}
        </p>
    </p>
</template>

<script>
export default {
    name: &#39;child&#39;,
    props: {
        c: Array
    }
}
</script>

<style  scoped>
    
</style>

<template>
  <p class="hello">
    <home-child v-bind:c="c"></home-child>
  </p>
</template>

<script>
import HomeChild from &#39;@/components/common/Child&#39;
export default {
  name: &#39;home&#39;,
  components: {
    HomeChild
  },
  data () {
    return {
      c:[1,2,3]
    }
  }
}
</script>

<style scoped>

</style>

<template>
    <p>
        <p v-for="(item,key) of c" :key="key">
           {{key}}: {{item}}
        </p>
        <button v-on:click="ChildClick">点击向父组件传值</button>
        <span>{{data}}</span>
    </p>
</template>

<script>
export default {
    name: &#39;child&#39;,
    props: {
        c: Array,
        data: String
    },
    methods: {
        ChildClick: function () {
            this.$emit("ListenChild","I am child.vue")
        }
    }
}
</script>

<style  scoped>

</style>

<template>
  <p class="hello">
    <home-child v-bind:c="c" :data="data" v-on:ListenChild="ShowChild"></home-child>
  </p>
</template>

<script>
import HomeChild from &#39;@/components/common/Child&#39;
export default {
  name: &#39;Home&#39;,
  components: {
    HomeChild
  },
  data () {
    return {
      c:[1,2,3],
      data: " "
    }
  },
  methods: {
    ShowChild: function (data) {
      this.data = data
      console.log("data:" + data)
    }
  }
}
</script>

<style scoped>

</style>